The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A067093

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Floor[X/Y] where X = concatenation of (n+1)-st odd number through the 2n-th odd number and Y = concatenation of first n odd numbers.
(history; published version)

#3 by N. J. A. Sloane at Thu Dec 05 19:55:07 EST 2013

AUTHOR

_Amarnath Murthy (amarnath_murthy(AT)yahoo.com), _, Jan 07 2002

Discussion

Thu Dec 05

19:55

OEIS Server: https://oeis.org/edit/global/2075

#2 by Russ Cox at Fri Mar 30 17:30:38 EDT 2012

EXTENSIONS

More terms from _Robert G. Wilson v (rgwv(AT)rgwv.com), _, Jan 09 2002

Discussion

Fri Mar 30

17:30

OEIS Server: https://oeis.org/edit/global/156

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

Floor[X/Y] where X = concatenation of (n+1)-st odd number through the 2n-th odd number and Y = concatenation of first n odd numbers.

DATA

3, 4, 58, 6714, 81975, 96852, 111729, 126607, 141484, 156361, 171238, 186116, 200993, 215870, 230748, 245625, 260502, 275379, 290257, 305134, 320011, 334889, 349766, 364643, 379520, 39439811, 4092753962, 424152673322, 43902995043838

OFFSET

1,1

EXAMPLE

a(4) = floor[9111315/1357] = floor[6714.30729550478997789240972733972] = 6714.

MATHEMATICA

f[n_] := (k = 1; x = y = "0"; While[k < n + 1, x = StringJoin[x, ToString[2n + 2k -1]]; y = StringJoin[y, ToString[2k - 1]]; k++ ]; Return[ Floor[ ToExpression[x] / ToExpression[y]]] ); Table[ f[n], {n, 1, 32} ]

CROSSREFS

Cf. A067088, A067089, A067090, A067091, A067092.

KEYWORD

easy,base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jan 07 2002

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 09 2002

STATUS

approved